FABRICATION OF FE-DOPED ZINC OXIDE ON BACTERIAL CELLULOSE FROM ZINC DROSS FOR DYES WASTE TREATMENT WITH PHOTOCATALYSIS PROCESS
The technology of advancing photocatalytic-based oxidation processes (AOPs) is one of the attractive methods for removing synthetic substances from textile industrial waste because it can degrade organic compounds into H2O and CO2 using energy from sunlight. One of the semiconductor materials widely...
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| Format: | Theses |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/80571 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The technology of advancing photocatalytic-based oxidation processes (AOPs) is one of the attractive methods for removing synthetic substances from textile industrial waste because it can degrade organic compounds into H2O and CO2 using energy from sunlight. One of the semiconductor materials widely used as an active photocatalyst is zinc oxide (ZnO). However, the catalytic activity of the existing ZnO is still not high enough because the particle size is quite large. A previous study produced smaller iron oxides using bacterial cellulose (BC) from nata de coco as a substrate. Therefore, in this study, nano-sized ZnO was prepared from zinc dross (ZD) in the presence of BC as a substrate. In addition, the effect of the concentration of Zn and Fe in ZD on the photocatalytic performance of the resulting Fe2O3/ZnO composite was studied. Three solutions of Zn precursors were prepared by dissolving ZD in acetic acid at 60 °C (hydrometallurgical process). Based on testing using the atomic absorption spectroscopy (AAS) method, the three precursor solutions contained 2692, 25554, 42059 ppm Zn and 107, 2204, 8614 ppm Fe. Results Based on tests using the Fourier Transformation Infra-Red (FTIR) and X-ray Diffraction (XRD) methods, it is known that ZnO and Fe2O3 have been successfully deposited on BC from nata de coco. Scanning electron microscope (SEM) images show that the resulting particles have sizes in the range of 0.167 – 0.560 m. the ability of the photocatalyst to degrade methylene blue (MB) as a model compound for synthetic dye using UV light and the concentration of MB in testing using the UV-Vis spectroscopy method. Based on UV-Vis data, it is known that the solution with the smallest concentration (2000 ppm) has the highest degradation value of 63%, and the lowest is with the highest concentration of 42000 ppm at 38%. |
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